Head buried deep into the burrow while tending the female inside their nest, Great Pied Hornbill Buceros bicornis, Khao Yai National Park, Thailand

great hornbill hornbills concavecasqued hornbill fruiting tree yellow bill buceros bicornis nesting bucerotidae frugivore bird in the habitat nest foraging conservation bucerotiformes frugivorous large bird tree perch anthracoceros habitat plumage southeast asia birds tropical forest khao yai branch longlived insectivore fruits rainforest national park thailand nature jungle vulnerable semievergreen world heritage tropical burrow forest great indian feathers massive bill unesco pied black casque wings fishing indian subcontinent